Question 1: Is it github, or is it everyone:

Answer: https://downdetector.com/

(If everyone's having issues, then stop. Otherwise, continue below...)

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Question 2: Is it github?

Answer 2: https://www.githubstatus.com/

Question 3: Why are you lying to me, is it github or not?

Answer 3: https://mrshu.github.io/github-statuses/

(If github is not having issues, then check your local environment. Otherwise, continue...)

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Question 4: Why is it always github, surely they're not that bad right?

Answer: https://www.dayswithoutgithubincident.com/

(Perhaps its time to consider an alternative to github, or at least a mirror)